Burglar-alarm.



C. W. MANNING & A. C. M. GOULD.

-BURGLAR ALARM.

APPLICATION FILED OCT. 20 1909. 1,15%,140. Patented 001.. 26, 1915.

2 SHEETS'-SHEET I.

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C. W. MANNING & A. C. M. GOULD.

BURGLAR ALARM.

APPLICATION FILED OCT. 20. 1909.

Patented Oct. 26, 1915.

2 SHEETSSHEET 2.

ATTORNEYS Cir WTED @TATEd anion.

CLYDE W. MANNING AND ALBERT C. 1W. GOULD, O1 NEVJ YORK, N, Y., ASSIG-NOBS OF FIVE-SIXTEENTHS TO WILLIAMI HQ MALCOLM AND ONE-FOURTH TO JAMES RILEY GORDON, BOTH OF NEW "Z'QRK, N. Y.

BURG-LAR-ALARM.

Specification of Letters Fateiit.

Patented @ct. 26, 1915.

Application filed October 20, 1909. seiialno. 523,693.

York, borough of Manhattan, county and State of New York, have invented a certain new and useful Burglar-Alarm, of which the following is a specification.

This invention is a burglar alarm of simple construction, and it is adapted to be placed on doors, windows or other movable parts of a house, or other structure, so as to be operated, a. 6., causedto give an alarm, when applied to such parts and the latter are moved by those who attempt to enter such house, or other structure.

The device may be permanently fastened in position for operation, but, in the preferred embodiment of the invention, it is detachably secured in place so as to be readily removed therefrom when it is not desired to set or use the alarm.

The preferred form of signaling device used on the alarm consists of a car- .tridge, usually, though not necessarily blank, but it will be apparent that such signal may consist of a bell or other suitable expedient for warning the inmates of the house, or for setting a signal in operation, through electrical connections or otherwise, at some distant location exterior of the building where mounted. a

In the accompanying drawings we have illustrated different practical embodiments of the invention, but the constructions shown therein are to be understood as illustrative, only, and not as defining the limits of the invention.

Figure 1 is an'elevation of a part of a door and easing with the alarm positioned thereon for operatioiuFig. 2 shows the clevice positioned near the lower-end of a window, and adapted to bevoperated when the lower sash is raised above a predetermined point; Fig. 3 is a partial section on line 3-3 of Fig. 2; Fig. 4 shows the device positioned near the upper end of a window, and adapted to be operated when the upper sash is lowered beyond a' predetermined point; Fig. 5 is an elevation of the complete alarm and the detachable support therefor with a portion of the frame work partly in section; Fig. 6 is a perspective view of the support; Fig. 7 is a section on line 7-7 of Fig. 5; and Fig. 8 is a section on line 8-8 or 1 1g. 5, with certain additional details shown in dotted lines.

The burglar alarm, as a whole, is designated A, and it consists of a frame work having abase, a, cored uprights or standards, D, Z), for supporting parts of the operating mechanism, and an upright, 0, containing a cartridge support or chamber. (Z, in which a blank cartridge, 0, is adapted to be inserted.

Pivoted to the base of the framework, is

a breech block, 7, pivoted at g, in which works a firing pin, it, which is' adapted to be brought into engagement with the cartridge, c, for firing the same, in a manner hereinafter described.

The breech block is pivoted in order that it may be thrown backward, laterally, to permit of the insertion and withdrawal of the cartridge in the breech block. It

c, continuing the cartridge support might be similarly pivoted so as to be thrown into position for the insertion of the carwill be apparent, however, that instead of pivoting the breech block, the upright,

tridge, in which event the breech block, f,

might be in fixed position.

The breech block is locked in its closed position by means of a locking pin, 71, one

end of which is bent and extends through a' slot, 7', in firing pin, it, so that the latter may be secured in the breech block and yet be permitted to have a reciprocating movement. The other end of pin, 2', is provided with a hook, or similar means, is, which takes into a perforated lug, Z, projecting from base, a, whereby the breech block is fastened in its operative position.

A plunger, m, works in the cored standards, Z), Z), and in alinement with firing pin, it, and cartridge, 0. One end of this plunger has an arm, n, extending outwardly therefrom, movement of which arm, when the plunger is in its lockedposition, releases. the locking mechanism of the plunger and permits the latter to be projected forwardly.

Secured on the plunger is a pin, 0, for locking-the plunger in a position under ten sion, said pin preferably passing through the plunger. Housed between one of the standards, I), and the pin, 0, is a coiled spring, 79, supported on or carried by plunger, m. The plunger may be drawn backward,uunder tension of spring, 7), and retained in this position by means of pin, 0, engaging a lug, (1, extending upwardly from base, a. The plunger may be pulled backward against the tension of spring, 79, by means of arm, n, and can be rotated so that pin, 0, can be retracted to the rear of lug, a, whereupon a slight rotation of the y plunger throws the pin, 0, into engagement with lug, 7, securely locking the plunger under tension.

It will be readily apparent that when the plunger is looked under tension and said 5 plunger is slightly rotated, e. 9., by impart ing movement to arm, n, so as to rotate pin, 0, out of engagement with the lug, (7, that the plunger is released and thrown forward with'considerableforce, depending 011 the tension of spring, 29.

The parts of the alarm just described may be permanently secured in position for operation by attaching base, a, to the casing of a door, window, etc., whereby the opening of said door, or window will, when the plunger is in a locked position, rotate arm, n, as described and release the plunger. We prefer, however, to provide a supporting member, B, see Fig. 6, having a base, 9, and inwardly inclined flanges, 10, said member being adapted to be fixedly'secured in any desired position or location by means of screws, 11, 11, passing through openings, 12, 12. Base member, a, would then be so shaped as to be slidable onto the supporting member and prevented from sidewise movement by the flanges, 10, 10. lhe supporting member, I B, would usually be secured in an upright "position and the alarm slipped therein, the

4e alarm being prevented from falling out,

lengthwise of its supporting member, by means of one of the lugs, r, contacting with the upper end of one of the fianges, 10.

In' Fig. lwe have shown the supporting member, B, secured to the casing, 12, of a door, 13, with the alarm, A, supported on the base member. Arm, n, extending from the plunger, m, is inthe path of movement of the'door, so that when the door is opened in a direction to engage said arm, the plunger is rotated, carrying with it pin, 0, until the latter is disengaged from its locked position on lug, thereby'causing plunger, m. to be thrown forward by the tension of spring, 79, as described.

plan View of a portion of a door is shown in dotted lines in Fig. 8, in two positions, the first in normal closed position, 14, and the relative position of arm, n, of the 0 alarm with reference thereto. As the door is moved inthe direction indicated by the arrow, it assumes the second dotted position, 14:, having in the meantime engaged arm, n, whereby plunger, m, is rotated and pin, 0, disengaged from'lug, g.

In Figs. 2 and 3, we have shown the alarm so positioned as to be operated when the lower sash of a window is moved above a predetermined height. The alarm is secured to inner casing, 15, of the window, 16, and the-sash, 17 of the latter carries a cam, or similar member, 18, adapted, when the window is raised a certain extent, to rotate arm, n, and operate the plunger, m, as heretofore described. Referring to Fig. 4, numeral 19 represents the bottom member of the upper window sash, and 20, the top member of the lower window sash. Alarm, A, is secured on the upper inside of sash member, 19, with the arm, n, projecting across the path of movement of sash member, 20, so that if the upper window, 21, is lowered, or the lower window, 22, is elevated, arm, n, is rotated and the plunger, m, released as heretofore described.

The locking and releasing of plunger, m, having been fully described, its action in causing an alarm, by means of its cooperation with firing pin, it, and cartridge, 0, will also be understood from the description heretofore given, but it may be briefly described as follows: the breech block, b, having been thrown backward on its pivotal connection, g, the blank cartridge, 0, is inserted in cartridge chamber, (Z, with its headed end contiguous to the normal position of firing pin, it, the breech block is then rotated to its normal position and locked therein by pin, 2', it being understood that cartridge, 6, firing pin, 71,, and plunger, m, are in alinement; assuming now that the plunger, m, is in its locked position and arm, n, is rotated, in one of the several Ways described, said plunger is released and thrown forward, whereupon it imparts movement to firing pin, It, which is thrown against cartridge, 6, and produces the intended alarm by exploding said cartridge.

It will be observed that the alarm is simple in construction, economical to manufacture and install, and thoroughly eiiicient in operation.

By providing the supporting member, B, heretofore fully described, the alarm. may be readily removed from its operative position when it is not intended to be used, but may be expeditiously replaced when it is desired to set it for operation.

It will be apparent that the specific structure described, as well as its particular mode of operation, and specified methods of application may be to a certain extent modified without departing from the spirit or substance of our invention.

Having thus fully described the invention, what we claim as new, and desire to secure by Letters Patent is:

In a burglar alarm, the combination of a plunger, means for placing the plunger under tension, a pivoted breech block, a firing pin separate from the plunger, and mounted in the breech block in alinement with the plunger and operable thereby, a locking member retaining the firing pin against inadvertent displacement while allowing of longitudinal movement thereof, said locking member further serving to lock the breech block in its operative position, a support provided with a chamber for containing a cartridge in alinement with the firing pin; means for retaining the plunger under tension, said means being operable upon the rotation of the plunger to release said plunger and allow it to shoot forward, under the impelling action of the tension means into contact with the firing pin, whereby the cartridge is exploded and the alarm sounded. In testimony whereof we have signed our names to this specification in the presence of two subscribing witnesses.

q CLYDE V. MANNING. ALBERT C. M. GOULD. Witnesses W. H. MALODLIE, JAS. H. GRIFFIN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. G. 

